Topkapı Palace was built by Mehmet II in 15th century. It is located in Sultanahmet which is part of old city (AyaSofya and Blue Mosque area). The palace has 4 courtyards. Today, 3 of the courtyards are a museum. They have different type of exhibitions. You can feel the medieval time of Ottomans (Osmanlı) and see where palace people used to live.